Supports: racks – Special article – Platelike
Patent
1997-03-04
1998-11-17
Gibson, Jr., Robert W.
Supports: racks
Special article
Platelike
211 7101, 211205, A47F 500
Patent
active
058364587
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to a method for manufacturing a device in which dish-shaped containers, such as plates, dishes or serving trays, can be placed at a desired mutual distance above one another, which device consists of a column which has supporting elements disposed at the desired distance above one another, for the accommodation of the containers in the horizontal position, in which each supporting element consists of a number of pin-shaped projections, a column to which elements are fixed being manufactured first, and said elements being provided with pin-shaped projections projecting in the same direction.
The invention also relates to a device in which dish-shaped containers, such as plates, dishes or serving trays, can be placed at a desired mutual distance above one another, which device consists of a column which has supporting elements disposed at the desired distance above one another, for the accommodation of the containers in the horizontal position, in which each supporting element consists of a number of pin-shaped projections which are fixed to the column by means of elements.
Such a device is known from, for example, European Patent EP-0,432,813. The device described therein consists of a vertical column with a base. The column has a triangular or rectangular cross-section, while pin-shaped projections are disposed on each side. Two projections always lie in line with each other in the horizontal direction, and a third pin-shaped projection which is longer than the other two projections lies in the centre below the other two projections at a certain distance below the line connecting the other two projections to each other. Fitted at the ends of the pin-shaped projections are moulded pieces corresponding to the shape of the edges and the underside respectively of the plates or dishes stored in the device.
Such devices are difficult to manufacture, on account of the large number of projections projecting in different directions. The shape is non-releasing, so that moulding methods such as injection moulding have to be carried out with very complex and expensive moulds. The device therefore has to be assembled from a large number of individual parts. Due to the large number of different parts and the amount of assembly work required to assemble the device, the manufacture of such a device has been very expensive until now.
SUMMARY OF THE INVENTION
The object of the invention is a method for manufacturing a device in which dish-shaped containers can be stored, in which the device can be assembled as simply as possible at the lowest possible cost. Another object of the invention is a device which can be manufactured simply, quickly and cheaply.
This object is achieved by the invention through the fact that the elements are manufactured as strips which are integral with the projections, and through the fact that non-releasing blind slits are disposed in the side walls of the column, which slits have essentially the same cross-section as the strips, and through the fact that the strips with the projections are pushed into the slits. This means that a large number of projections can be manufactured in one go and disposed on the column, while the column itself can be a shape which is simple to manufacture, where the main shape with the slits can be extruded, for example, in one operation. Due to the fact that the projections project in one direction on each strip, the strips are a releasing shape, so that the strips are easy to make, for example by injection moulding. Both the column and the strips can be moulded by means of simple and readily controllable processes using simple moulds, and can be assembled easily and cheaply.
In a preferred embodiment the column is provided with several side faces which are at an angle with each other, a part of the non-releasing slits is disposed on the corners between the side faces, and strips are produced, while a groove is disposed in the lengthwise direction of the strips, and the strips are provided with projections project
REFERENCES:
patent: 4911308 (1990-03-01), Nylund
patent: 5088605 (1992-02-01), Nales
patent: 5538145 (1996-07-01), Held
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